modal by clicking button

1<!-- Button trigger modal -->
2<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
3  Launch demo modal
4</button>
5
6<!-- Modal -->
7<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
8  <div class="modal-dialog">
9    <div class="modal-content">
10      <div class="modal-header">
11        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
12        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
13      </div>
14      <div class="modal-body">
15        ...
16      </div>
17      <div class="modal-footer">
18        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
19        <button type="button" class="btn btn-primary">Save changes</button>
20      </div>
21    </div>
22  </div>
23</div>
24